Focussing
For my style of working, fast AF is a great asset but effective manual focus is also a critical consideration. I've found the 70-200 fantastic in this respect. Manual focus is, as with any AFS lens, instantly accessible by rotating the front focus ring and allows very precise control of focus. The resistance of the focus ring is slightly slacker on my lens than the zoom ring and in use I find it perfectly weighted to allow precise control.
The focus ring has a flanged contour and is very wide, improving ergonomics. The flange in the focusing ring also makes it unmistakable from the zoom ring meaning that it's easy to find without taking your eye from the finder. With all the technology that Nikon have included in this lens it's commendable that they've not neglected these basics.
It's also worth pointing out that the close focussing distance of 1.5 m can be reduced by 10 cm when manually focussing to bring out a little more close focussing potential from the lens. Despite this close focus gain, the limit of 1.4m is not great for close up subjects. It's important to be aware of the close focus cut-off to prevent getting caught out, particularly when working close in with restrictions on space preventing you from backing up.
The wide maximum aperture means the viewfinder image is very bright and therefore aids accurate focussing. The focus ring shifts focus from near to infinity in just a third of a turn and the zoom range can be covered in only a quarter turn of the zoom ring barrel - this allows for a high level of control over focus and zoom without an unnecessarily large rotation of either ring.
Aperture ring issues
One of the unforeseen issues I've encountered as a result of losing the aperture ring is that now when controlling aperture by the camera's front control dial there's too many half stops to scroll through. This is a double edged sword because I quite like the control offered by controlling aperture in half steps, but there's so much scrolling to go from 2.8 to 22 that it can get rather tedious and because I'm not used to the half stop numbers I always have to look for the aperture I'm after. I'd rather be able to simply know how many notches to rotate the command dial to get to a given aperture, without taking my eye off the subject.
Given the advantage of being able to access the intermediate f-stops I'm trying to adjust my working style to suit - but I may soon reconfigure this control to allow aperture adjustment in full stops. Thankfully Nikon provide a means to adjust aperture by third, half or full exposure steps through the use of custom setting b3 on the D200.
Using the front control dial to change aperture also means I have to take my finger off the shutter release and potentially miss shots in the process. Switching the control of aperture to the rear dial doesn't provide me with a solution as I'm then prevented from accessing other controls with my thumbs - like the AF-ON button.
Lens hood release
There is one aspect of the lens that's not well designed in my opinion - the lens hood release. With the introduction of the 70-200 Nikon included a small locking release on the side of the lens hood - the purpose being to lock the hood in place preventing it from accidentally falling off during use. As you'll see on most of the images of the hood used in this review I initially mounted the hood with this release button on the left hand side of the lens. Unfortunately in this position when I put the camera and body into my backpack (with this catch facing downwards) the release will often have been triggered by the time I remove it and the hood will fall off as soon as I take the lens out of the bag.
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